Sharp LC-32LE250M Service Manual page 23

No HDMI sound heard. <INPUT 1>
(*INPUT 1 is digital audio.)
Does the HDMI image appear onscreen?
YES
No audio output from <INPUT 1>
YES
Are waveforms input in to the pins of IC3301 normally?
YES
Is there audio signal input at pin(22),(32) of IC1702
YES
Is the L-ch audio signal output at pin(10) ,(11),(16),(17) of IC1702
normal ?
Is the R-ch audio signal output at pin (2),(3),(8),(9) of IC1702
normal ?
YES
Are the audio signal L-ch and R-ch output at (3)/(4) and (1)/(2) of
P1702 normal?
YES
Check speakers and their peripheral circuits.
No audio heard (3)
NO Refer to "<INPUT 1> in No external input video onscreen
(HDMI)".
NO Check the EDID.
NO Check peripheral circuits IC3301.
NO Check connection between IC3301 and IC1702 and its periph-
eral circuits.
NO Check IC1702 and its peripheral circuits.
NO Check circuit between IC1702 & P1702.
7 – 6
LC-32LE250M